UPDATE: The Dallas County Medical Examiner says the person who died was 19-year-old Andrew James Graf of Argyle. Dallas Fire-Rescue originally said the deceased was a 15-year-old boy, but that appears to be an error on their part.

ORIGINAL POST: 2:46 AM on Sun., Jun. 19, 2011:

A 15-year-old 19-year-old man died and more than two dozen others who were at the Electric Daisy Carnival at Fair Park were hospitalized because of drugs, alcohol and heat-related health problems, authorities said.

No information was immediately available on what may have caused the death of the teen boy who was at the rave, which gained notoriety after the death of a teen girl at the same event in Los Angeles last year.

In addition to the Saturday death, Dallas Fire-Rescue spokesman Jason Evans said "Approximately 25-30 people were taken to local hospitals with a multitude of emergencies related to either drug or alcohol use and even heat related issues."

Authorities described a chaotic scene at Fair Park that began with calls for paramedics about 9 p.m. and ended early this morning.

"At one time there were at least 10 different rescue units responding to the event at once, with a number of Emergency Medical Services Supervisors and engine companies for manpower," Evans said. "The chaos finally came to a rapid stop when someone pulled a fire alarm around 1:30 a.m. and sent those that remained scattering."

The event's website says they have zero tolerance for drug use and that you must be 18 to enter. It is officially described as a music festival with "extras to create a feast for the senses."

"Electric Daisy Carnival delivers leading-edge production to create an unparalleled experience of sight and sound at every stage," the event website says. "Lights, sound, and spectacles will amuse your senses throughout the night!"